摘要
提出了一种新型可调节的自适应区域调光方法.该方法利用已有区域背光算法计算的背光亮度值构造约束条件,在经区域背光算法得出背光后,结合人眼视觉特性对该背光进行不同幅度的增减,利用发光二极管-液晶显示器(LED-LCD)样机选取在显示图像不失真的条件下显示质量最好的背光亮度作为该图像的最佳背光亮度,然后对最佳背光进行像素补偿.实验结果表明所提方法能使显示图像更加接近真实场景感知,在一定程度上提高了图像的对比度等.
A new adjustable adaptive local dimming method is proposed.In the proposed method,backlight brightness values calculated by existing local backlight algorithms are used to construct the constraint condition.Then,the backlight obtained by the local backlight algorithm is adjusted according to human visual characteristics.Based on the light-emitting diode-liquid crystal display(LED-LCD)prototype,the brightness of the backlight with the best quality is chosen as the highest backlight brightness of the image under the condition that the display image is not distorted.Finally,pixel compensation is conducted based on the optimal backlight.Experimental results show that the proposed method can make the displayed image closer to real scene perception and improve the image contrast to a certain extent.
作者
张涛
胡孟阳
杜文丽
王昊
Zhang Tao;Hu Mengyang;Du Wenli;Wang Hao(School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2020年第12期213-221,共9页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61350009,61179045)
华为创新研究计划(HO2018085418)。
关键词
图像处理
高动态范围
区域调光
图像背光调节
像素补偿
image processing
high dynamic range
local dimming
image backlight adjustment
pixel compensation
